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<TITLE>Magic-8.3 Command Reference</TITLE>
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<H1> <IMG SRC=../graphics/magic_title8_3.gif ALT="Magic VLSI Layout Tool Version 8.3">
     <IMG SRC=../graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>

<H2>scroll</H2>
<HR>
Specify the 3D viewpoint position
<HR>

    scroll [x y z]

<H3>Shortcuts:</H3>
   <BLOCKQUOTE>
      The <B>arrow</B> keys implement different aspects of the <B>scroll</B>
      command, panning in the <I>x</I> and <I>y</I> directions relative to
      the normal layout view.
   </BLOCKQUOTE>

<H3>Usage:</H3>
   <BLOCKQUOTE>
      <B>scroll</B> [<I>x y z</I>] <BR><BR>
      <BLOCKQUOTE>
         where <I>x</I>, <I>y</I>, and <I>z</I> represent the viewpoint
	 position in each of the axes.
      </BLOCKQUOTE>
   </BLOCKQUOTE>

<H3>Summary:</H3>
   <BLOCKQUOTE>
      The <B>scroll</B> command sets the 3D viewpoint position on
      each of the axes, where the <I>x</I> and <I>y</I> origins are
      equal to the layout origin, and the <I>z</I> origin is on the
      substrate.  Without arguments, returns the current viewpoint
      position in the three axes.
   </BLOCKQUOTE>

<H3>Implementation Notes:</H3>
   <BLOCKQUOTE>
      <B>scroll</B> is implemented as a built-in <B>wind3d</B>
	window command in <B>magic</B>.  It overrides the default
	window client <B>scroll</B> command.  Note that the <B>wind3d</B>
	window is only available when magic is compiled with the OpenGL
	graphics option and invoked with <B>magic -d OGL</B>. <P>
	
      Note that macros of the <B>wind3d</B> window are hard-coded,
	and cannot be changed with the <B>macro</B>, <B>gmacro</B>, or
	<B>imacro</B> commands.  There is no "<TT>:</TT>" macro for
	entering commands; to enter commands from the command-line,
	use the <A HREF=../tk_path_name.html> <I>tk_path_name</I></A>
	command.  The default Tk path name of the <B>wind3d</B> window
	is "<TT>.magic3d</TT>".
   </BLOCKQUOTE>

<H3>See Also:</H3>
   <BLOCKQUOTE>
      <A HREF=view.html><B>view</B></A> <BR>
      <A HREF=zoom.html><B>zoom</B></A> <BR>
   </BLOCKQUOTE>

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<P><I>Last updated:</I> October, 2004<P>
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